[go: up one dir, main page]

KR20000063640A - method of polyvinylacetal sponge - Google Patents

method of polyvinylacetal sponge Download PDF

Info

Publication number
KR20000063640A
KR20000063640A KR1020000043481A KR20000043481A KR20000063640A KR 20000063640 A KR20000063640 A KR 20000063640A KR 1020000043481 A KR1020000043481 A KR 1020000043481A KR 20000043481 A KR20000043481 A KR 20000043481A KR 20000063640 A KR20000063640 A KR 20000063640A
Authority
KR
South Korea
Prior art keywords
mixing
sponge
cell
starch
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
KR1020000043481A
Other languages
Korean (ko)
Other versions
KR100346915B1 (en
Inventor
김용숙
박전하
Original Assignee
김용숙
박전하
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김용숙, 박전하 filed Critical 김용숙
Priority to KR1020000043481A priority Critical patent/KR100346915B1/en
Publication of KR20000063640A publication Critical patent/KR20000063640A/en
Application granted granted Critical
Publication of KR100346915B1 publication Critical patent/KR100346915B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0023—Use of organic additives containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2329/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: A process for preparing a polyvinylacetal sponge by uniformly forming a fine open cell formed by dissolution of soluble material and a relatively large size of a gas cell formed by a foaming agent is provided which produces the sponge having excellent dehydrating property and hydrating property. CONSTITUTION: The process comprises the steps of a first mixing process for mixing polyvinyl alcohol powder, water, starch, dextrin and formalin; a first heat melting process for producing gel from the mixture; a second mixing process for mixing the obtained mixture with a foaming agent and acid; a second heating reaction process for forming a foam; a soluble material dissolving process for dissolving the hydrolyzed starch and dextrin by contacting the foam with water; and a mixing process for mixing at least one of sodium alginate, carboxymethyl cellulose or carboxymethyl starch in the first mixing process or second mixing process.

Description

폴리비닐아세탈 스폰지의 제조방법{method of polyvinylacetal sponge}Method of producing polyvinyl acetal sponge {method of polyvinylacetal sponge}

본 발명은 폴리비닐아세탈 스폰지의 제조방법에 관한 것으로서, 보다 상세하게는 가용성 물질이 용출되어 형성된 미세한 용출셀과 이 용출셀보다 사이즈가 큰 셀이 혼합형성되어 물 및 유기용제를 함수하는 함수성과 탈수성이 높아서 사용성이 우수한 스폰지를 제조할 수 있는 새로운 폴리비닐아세탈 스폰지의 제조방법에 관한 것이다.The present invention relates to a method for producing a polyvinyl acetal sponge, and more particularly, a fine eluting cell formed by dissolving a soluble substance and a cell having a size larger than that of the eluting cell are mixed and formed to have water functionality and dehydration function. It relates to a new polyvinyl acetal sponge manufacturing method capable of producing a sponge having high properties and excellent usability.

폴리비닐아세탈 스폰지는 다른 합성수지 스폰지에 비해 비교적 강한 흡수력과 흡착력을 가지기 때문에 필터나 미생담체 등과 같은 공업용도로 많이 이용되고 있다. 이러한 폴리비닐아세탈 스폰지는 일반적으로 폴리비닐알콜을 물에 용해하여 전분, 덱스트린 등의 가용성물질과, 포르말린을 첨가한 후, 촉매로서 황산 또는 염산을 사용하여 가열한 다음, 세척과 탈수를 반복하여 산에 의해 가수분해된 전분과 덱스트린을 용출시켜 제조된다. 이때에는 상기 전분과 덱스트린이 용출되면서 오픈셀이 형성된다.Polyvinyl acetal sponge has a relatively strong absorption and adsorptive power compared to other synthetic resin sponges, so it is widely used in industrial applications such as filters and microorganisms. The polyvinyl acetal sponge is generally dissolved in polyvinyl alcohol in water, added with soluble substances such as starch, dextrin, and formalin, heated with sulfuric acid or hydrochloric acid as a catalyst, and then washed and dehydrated repeatedly. Prepared by eluting the hydrolyzed starch and dextrin. At this time, the starch and dextrin are eluted to form an open cell.

그런데 이와 같이 전분이나 덱스트린이 용출되어 형성되는 오픈셀은 전분이나 덱스트린의 입자가가 용출되는 그대로 형성되기 때문에 이 오픈셀의 사이즈는 전분이나 덱스트린의 입자와 거의 동일한 사이즈로 형성되기 때문에 그 사이즈가 대략 0.5㎜이하로 미세하다. 그러므로 이와 같이 제조된 폴리비닐아세탈 스폰지는 상기 미세한 오픈셀에 의한 모세관형상으로 물을 흡수하기 때문에 흡수속도가 느릴 뿐만 아니라 흡수한 물을 배출하는 배출속도도 느리다. 따라서 폴리비닐아세탈 스폰지는 흡수력이 강함에도 불구하고 이를 이용해 일반 생활용품 특히 청소용 세척롤 제작하는 경우에는 소요되는 수준의 품질을 얻기가 곤란하였다. 또한, 폴리비닐아세탈은 내수성이 우수하며, 내용제성 또한 우수하여 거의 모든 유기용제에 용해되지 않을 뿐만 아니라, 오픈화된 다공성 스폰지이기 때문에 미생물 슬러지와 친화되어 미생물이 효과적으로 부착되는 특성이 있어서, 오폐수처리시 사용되는 미생물담체로 적당하다. 그러나 전술한 바와 같이 종래의 폴리비닐아세탈 스폰지는 가용성물질이 용출에 의해 미세한 오픈셀을 가지기 때문에 비교적 표면적이 작아 미생물 부착에 한계를 갖고 있다.However, since the open cell formed by eluting starch or dextrin is formed as the particles of starch or dextrin are eluted, the size of the open cell is almost the same as that of starch or dextrin. It is fine to 0.5 mm or less. Therefore, the polyvinyl acetal sponge thus prepared absorbs water in a capillary shape by the fine open cell, so that the absorption rate is slow as well as the discharge rate for discharging the absorbed water is slow. Therefore, even though the polyvinyl acetal sponge has a strong absorption power, it is difficult to obtain the required level of quality when producing general household products, especially cleaning wash rolls. In addition, polyvinyl acetal is excellent in water resistance and solvent resistance, so it does not dissolve in almost all organic solvents, and because it is an open porous sponge, it is compatible with microbial sludge and effectively attaches microorganisms. It is suitable as a microbial carrier to be used. However, as described above, the conventional polyvinyl acetal sponge has a limited surface area due to its relatively small surface area because the soluble material has a fine open cell by elution.

따라서 전술한 바와 같은 폴리비닐아세탈의 특성을 효과적으로 활용하기 위해서는 스폰지의 제작시 비교적 큰 사이즈의 셀을 형성할 필요가 있으나 종래의 가용성물질을 용출시키는 방법에 의해서는 이러한 큰 사이즈의 셀을 형성하는 것을 거의 불가능하였다.Therefore, in order to effectively utilize the characteristics of the polyvinyl acetal as described above, it is necessary to form a cell of a relatively large size when manufacturing a sponge, but by forming a cell of such a large size by a method of eluting a conventional soluble material. It was almost impossible.

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 가용성물질이 용출되어 형성되는 미세한 오픈셀과 발포제에 의해 형성되는 비교적 큰 사이즈의 가스셀이 혼합형성되도록 처리함으로써, 물 및 유기용제의 흡수, 배출능력을 향상시키고 또 표면적이 넓어져서 미생물의 흡착력이 우수할 뿐만 아니라 함수성이 우수한 스폰지를 제조할 수 있는 새로운 폴리비닐아세탈 스폰지의 제조방법을 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to treat the water and the organic solvent by mixing the fine open cell formed by eluting the soluble material and the gas cell of a relatively large size formed by the blowing agent, It is to provide a new method for producing a polyvinyl acetal sponge that can improve the absorption, discharge capacity of the and the surface area is wide and excellent in the ability of adsorption of microorganisms as well as excellent sponge.

도 1은 종래의 폴리비닐아세탈 스폰지의 단면도1 is a cross-sectional view of a conventional polyvinyl acetal sponge

도 2는 본 발명에 의해 처리과정을 보인 개략도2 is a schematic view showing a process by the present invention

도 3는 본 발명에 의해 제조된 스폰지를 보인 단면도이다.3 is a cross-sectional view showing a sponge produced according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1. 스폰지 2. 용출셀1. Sponge 2. Elution cell

4. 가스셀 10. 제1혼합공정4. Gas Cell 10. First Mixing Process

20. 1차가열용융공정 30. 제2혼합공정20. Primary heating melting process 30. Second mixing process

40. 2차가열반응공정 50. 가용성물질용출공정40. Secondary heating reaction process 50. Soluble material dissolution process

본 발명에 따르면, 폴리비닐아세탈의 스폰지의 제조방법에 있어서, 폴리비닐알코올 분말에 물과 함께 전분, 덱스트린 등의 가용성물질 및 포르말린을 혼합하는 제1혼합공정(10)과, 상기 혼합물을 가열하여 상기 폴리비닐알코올 분말과 전분을 용융시켜 혼합물을 졸로 만드는 1차가열용융공정(20)과, 상기 1차가열한 혼합물에 분해형 발포제와 산을 혼합하는 제2혼합공정(30)과, 열반응으로 폴리비닐알코올이 아세탈화되며 전분이 가수분해되고 상기 발포제가 분해되어 발생된 가스에 의해 셀이 형성되어 폼을 생성하는 2차가열반응공정(40)과, 2차가열공정(40)후에 상기 폼을 물에 접촉시켜 가수분해된 전분과 덱스트린을 용출시키는 가용성물질용출공정(50)과, 상기 제1혼합공정(10) 또는 제2혼합공정(30)에서 알긴산소오다, CMC 또는 CMS 중에서 적어도 하나 이상을 혼합하는 공정을 포함하여 이루어져서, 상기 가용성물질이 용출되어 형성된 용출셀(2)과 상기 분해형 발포제가 분해되어 발생된 가스에 의해 형성되며 상기 용출셀(2) 보다 큰 사이즈를 가지는 가스셀(4)이 고르게 분포되도록 된 것을 특징으로 하는 폴리비닐아세탈 스폰지의 제조방법이 제공된다.According to the present invention, in the method for producing a sponge of polyvinyl acetal, a first mixing step (10) of mixing polyvinyl alcohol powder with water, soluble substances such as starch, dextrin, and formalin, and heating the mixture A primary heating melting step 20 of melting the polyvinyl alcohol powder and starch into a sol, a second mixing step 30 of mixing a decomposition type blowing agent and an acid in the first heated mixture, and a thermal reaction. The polyvinyl alcohol is acetalized, the starch is hydrolyzed, the foaming agent is decomposed, and a cell is formed by the gas generated to generate a foam, followed by the secondary heating step 40 and the secondary heating step 40 after the foam. Soluble substance elution step (50) for eluting hydrolyzed starch and dextrin by contact with water, and at least one of sodium alginate, CMC or CMS in the first mixing step (10) or the second mixing step (30). this And a gas cell having a size larger than that of the eluting cell 2, the eluting cell 2 formed by eluting the soluble material and the gas formed by decomposition of the decomposable blowing agent. Provided is a method for producing a polyvinyl acetal sponge, characterized in that 4) is distributed evenly.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 설명하면 다음과 같다. 도 2는 본 발명에 의해 처리과정을 보인 개략도이며, 도 3은 본 발명에 의해 제조된 스폰지의 단면을 도시한 것이다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Figure 2 is a schematic view showing the process by the present invention, Figure 3 shows a cross section of the sponge produced by the present invention.

본 발명은 가용성물질이 용출되면서 형성되는 용출셀(2)과, 분해성 발포제가 분해되어 발생된 가스에 의해 형성되며 상기 용출셀(2) 보다 큰 사이즈를 가지는 가스셀(4)이 고르게 혼합분포되도록 처리하는 방법에 관한 것으로, 다음과 같이 이루어진다.In the present invention, the elution cell (2) formed by dissolving the soluble material and the gas cell (4) having a size larger than the elution cell (2) formed by the gas generated by decomposition of the decomposable blowing agent are evenly mixed and distributed. Regarding the processing method, it is as follows.

1) 먼저, 폴리비닐알코올 분말에 물과 함께 가용성물질인 전분과 덱스트린 그리고 포르말린을 혼합한다(10).1) First, soluble starch, dextrin, and formalin are mixed with water in a polyvinyl alcohol powder (10).

2) 상기 혼합물을 약 60~90℃에서 1차가열시킨다(20). 이와 같이 하면 폴리비닐알코올 분말과 전분이 용융되어 혼합물이 졸상태가 된다.2) The mixture is first heated at about 60 ~ 90 ℃ (20). In this way, polyvinyl alcohol powder and starch are melted, and the mixture becomes a sol state.

3) 이와 같이 1차가열용융시킨(20) 다음, 상기 혼합물에 알긴산소오다, CMC(carboxymethyl cellulose), CMS(carboxymethyl starch) 중에서 적어도 하나 이상을 선택하여 혼합하는데(32), 총 반응물의 0.5~10중량% 정도로 혼합한다. 상기 알긴산소오다, CMC 또는 CMS는 다당류의 일종으로 흔히 아이스크림이나 마가린 등의 유화제로 사용되는 것이다. 이러한 알긴산소오다, CMC 및 CMS는 물을 용매로 하는 본 발명에서 상기 분해형 발포제 의해 생성되는 가스셀(4)이 고르게 분산형성되도록 하여 제품의 질을 향상시킨다. 이러한 알긴산소오다이나 CMC, CMS는 상기 제1혼합공정(10)에서 미리 혼합하여도 무방하다.3) After primary heating and melting (20), the mixture is selected and mixed with at least one of sodium alginate, CMC (carboxymethyl cellulose) and CMS (carboxymethyl starch) (32). Mix about 10% by weight. The sodium alginate, CMC or CMS is a kind of polysaccharide, which is commonly used as an emulsifier such as ice cream or margarine. These sodium alginate, CMC and CMS in the present invention using water as a solvent to evenly disperse the gas cell (4) produced by the decomposition type blowing agent to improve the quality of the product. Such sodium alginate, CMC, CMS may be mixed in advance in the first mixing step (10).

3) 그런 다음, 산에 의해 분해되어 가스를 발생시키는 분해형 발포제와 산을 첨가한다(30). 이때 분해형 첨가제로는 TSH(toluen sulfonyl hydrazide), ADCA(azo dicabon amaide), DPT(dinitroso pentamethlene tetramine), OBSH(oxybenzensulfonyl hydrazide), NaHCO3, CaCO3또는 Al, Zn, Mg분말 등을 사용할 수 있다. 이러한 발포제는 총 반응물의 0.1~30중량%로 혼합한다. 발포제를 30중량% 이상 혼합하는 경우에는 셀이 상당히 커져서 스폰지가 거칠어 지므로 바람직하지 않고, 0.1중량% 이하로 사용하는 경우에는, 발포제에 의한 가스셀(4)이 효과적으로 형성되지 않는다. 이어서 상기 혼합물에 염산 또는 황산을 첨가한다.3) Then, an acid and a decomposable blowing agent are decomposed by acid to generate gas (30). At this time, as the decomposition type additive, toluen sulfonyl hydrazide (TSH), azo dicabon amaide (ADCA), dinitroso pentamethlene tetramine (DPT), oxybenzensulfonyl hydrazide (OBSH), NaHCO 3 , CaCO 3 or Al, Zn, Mg powder, etc. may be used. . These blowing agents are mixed at 0.1-30% by weight of the total reactants. In the case where 30% by weight or more of the blowing agent is mixed, the cell becomes considerably large and the sponge becomes rough, which is undesirable. Hydrochloric acid or sulfuric acid is then added to the mixture.

5) 상기 혼합물을 상온~80℃정도에서 약 1~40시간 2차가열한다(40). 이와 같이 하면 폴리비닐알코올이 포르말린에 의해 아세탈화되어 폴리비닐아세탈이 생성된다. 그리고 상기 전분이 산에 의해 가수분해되며, 상기 분해형 발포제가 산에 의해 분해반응하여 가스가 생성되고, 이 가스에 의해 가스셀(4)이 형성되어 폼이 만들어 진다.5) The mixture is secondarily heated at room temperature to about 80 ° C. for about 1 to 40 hours (40). In this way, polyvinyl alcohol is acetalized by formalin to produce polyvinyl acetal. The starch is hydrolyzed by acid, and the decomposition type blowing agent is decomposed by acid to generate gas, and the gas cell 4 is formed by the gas to form a foam.

6) 이와 같이 2차열처리한(40) 다음 상기 폼을 물로 세척하고 탈수하여 가수분해된 전분 및 덱스트린을 용출시켜(50) 용출셀(2)을 형성한다.6) After the secondary heat treatment (40), the foam is washed with water and dehydrated to elute the hydrolyzed starch and dextrin (50) to form the eluting cell (2).

이와 같이 하여 생성된 상기 용출셀(2)은 도 3에 도시된 바와 같이, 마치 미로와 같은 연속적이고 미세한 오픈셀로서, 0.5㎜ 미만이며, 이 용출셀(2)에 의한 모세관형상에 의해 물이 흡수된다. 그리고 상기 분해형 발포제가 분해반응하여 발생된 가스에 의해 형성된 가스셀(4)은 상기 오픈셀(2)에 비해 상당히 큰 0.5~5㎜ 의 사이즈를 가진다. 이러한 가스셀(4)은 상기 용출셀(2)에 사이사이에 고르게 분포되고 용출셀(2)과 연결되어 있어서, 용출셀(2)의 모세관형상에 의해 흡수된 물을 저장하는 역할을 하므로 스폰지의(1) 함수성이 우수할 뿐만 아니라 스폰지(1)의 흡수속도가 빨라지며, 반대로 흡수된 물을 제거하기 위해 스폰지(1)를 짰을 때 흡수된 물이 빨리 배출된다. 또한 이러한 가스셀(4)에 의해 종래의 용출셀(2)만이 형성된 종래의 스폰지에 비해 다양한 크기의 셀이 분포되므로 흡수 및 배출이 용이할 뿐만 아니라 스폰지의 표면적을 넓힐 수 있다.As shown in FIG. 3, the elution cell 2 thus produced is a continuous and fine open cell, like a labyrinth, which is less than 0.5 mm, and water is discharged due to the capillary shape of the elution cell 2. Is absorbed. In addition, the gas cell 4 formed by the gas generated by the decomposition type blowing agent decomposes has a size of 0.5 to 5 mm which is considerably larger than that of the open cell 2. The gas cells 4 are evenly distributed between the eluting cells 2 and connected to the eluting cells 2, so that the gas cells 4 store water absorbed by the capillary shape of the eluting cells 2. (1) not only excellent functionality, but also the absorption speed of the sponge (1) is faster, the absorbed water is quickly discharged when the sponge (1) is removed to remove the absorbed water. In addition, the cells of various sizes are distributed by the gas cells 4 compared to the conventional sponges in which only the conventional eluting cells 2 are formed, so that the absorption and discharge are easy and the surface area of the sponges can be increased.

필요에 따라서는 폴리우레탄스폰지 블록에 상기 2차혼합물을 충진시켜 블록을 만든 다음, 수세미 등의 제품을 제작하면, 스폰지의 세척효과 및 인장력, 내마모성이 증가된다.If necessary, the secondary sponge is filled into the polyurethane sponge block to make a block, and then a product such as a loofah is produced, and the cleaning effect of the sponge and the tensile strength and wear resistance are increased.

이상에서와 같이 본 발명에 의하면, 가용성물질이 용출되어 형성된 미세한 오픈셀과 발포제에 의해 형성된 비교적 큰 사이즈의 가스셀이 고르게 분포되도록 처리함으로써, 표면적이 넓어져서 이물질(청소 또는 세척대상물질) 등의 흡착력이 우수하며, 흡수속도와 배출속도도 우수한 스폰지를 제조할 수 있는 새로운 구조의 폴리비닐아세탈 스폰지의 제조방법이 제공된다. 이러한 방법에 의해 제조된 폴리비닐아세탈 스폰지는 물공급, 물끼제거 능력이 우수하여 목용용품, 청소용 스폰지, 주방용품 등과 같은 다양한 생활용품에 적용하거나 물공급롤러, 물제거롤러 등과 같은 공업용품에 적용하면 고품질의 제품을 얻을 수 있다. 또한, 용출셀과 가스셀에 의해 폐수처리용 활성오니가 부착할 수 있는 충분한 공간을 가짐으로써, 활성오니의 미생물담체로 사용하면 효과적이다.As described above, according to the present invention, the surface area is expanded to treat evenly distributed minute open cells formed by eluting the soluble material and gas cells of a relatively large size formed by the blowing agent, thereby increasing the surface area such as foreign matter (cleaning or cleaning material). Provided is a method for producing a polyvinyl acetal sponge having a new structure capable of producing a sponge having excellent adsorption power and excellent absorption and discharge rates. Polyvinyl acetal sponge produced by this method is excellent in water supply and debris removal ability to apply to a variety of household goods such as wood supplies, cleaning sponges, kitchen utensils or industrial supplies such as water supply rollers, water removal rollers High quality products can be obtained. In addition, it is effective to use as a microbial carrier of activated sludge by having sufficient space for the activated sludge for wastewater treatment by the eluting cell and the gas cell.

Claims (1)

폴리비닐아세탈의 스폰지의 제조방법에 있어서, 폴리비닐알코올 분말에 물과 함께 전분, 덱스트린 등의 가용성물질 및 포르말린을 혼합하는 제1혼합공정(10)과, 상기 혼합물을 가열하여 상기 폴리비닐알코올 분말과 전분을 용융시켜 혼합물을 졸로 만드는 1차가열용융공정(20)과, 상기 1차가열한 혼합물에 분해형 발포제와 산을 혼합하는 제2혼합공정(30)과, 열반응으로 폴리비닐알코올이 아세탈화되며 전분이 가수분해되고 상기 발포제가 분해되어 발생된 가스에 의해 셀이 형성되어 폼을 생성하는 2차가열반응공정(40)과, 2차가열공정(40)후에 상기 폼을 물에 접촉시켜 가수분해된 전분과 덱스트린을 용출시키는 가용성물질용출공정(50)과, 상기 제1혼합공정(10) 또는 제2혼합공정(30)에서 알긴산소오다, CMC 또는 CMS 중에서 적어도 하나 이상을 혼합하는 공정을 포함하여 이루어져서, 상기 가용성물질이 용출되어 형성된 용출셀(2)과 상기 분해형 발포제가 분해되어 발생된 가스에 의해 형성되며 상기 용출셀(2) 보다 큰 사이즈를 가지는 가스셀(4)이 고르게 분포되도록 된 것을 특징으로 하는 폴리비닐아세탈 스폰지의 제조방법In the method for producing a sponge of polyvinyl acetal, a first mixing step (10) of mixing polyvinyl alcohol powder with soluble substances such as starch, dextrin, and formalin together with water, and heating the mixture, the polyvinyl alcohol powder Primary heating melting step 20 of melting starch and sol to make a mixture, a second mixing step 30 of mixing a decomposition type blowing agent and an acid in the first heated mixture, and polyvinyl alcohol acetal by thermal reaction. The foam is contacted with water after the second heating step 40 and the second heating step 40 to form a cell by forming a cell by gas generated by hydrolysis of starch and decomposition of the blowing agent. A process of mixing at least one of sodium alginate, CMC, or CMS in the soluble substance elution step (50) for eluting the hydrolyzed starch and dextrin, and the first mixing step (10) or the second mixing step (30). Including, the elution cell (2) formed by eluting the soluble material and the gas cell (4) having a larger size than the elution cell (2) formed by the gas generated by decomposition of the blowing agent is evenly distributed Method for producing a polyvinyl acetal sponge, characterized in that
KR1020000043481A 2000-07-27 2000-07-27 method of polyvinylacetal sponge Expired - Fee Related KR100346915B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020000043481A KR100346915B1 (en) 2000-07-27 2000-07-27 method of polyvinylacetal sponge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020000043481A KR100346915B1 (en) 2000-07-27 2000-07-27 method of polyvinylacetal sponge

Publications (2)

Publication Number Publication Date
KR20000063640A true KR20000063640A (en) 2000-11-06
KR100346915B1 KR100346915B1 (en) 2002-08-03

Family

ID=19680385

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020000043481A Expired - Fee Related KR100346915B1 (en) 2000-07-27 2000-07-27 method of polyvinylacetal sponge

Country Status (1)

Country Link
KR (1) KR100346915B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7211294B2 (en) * 2002-08-09 2007-05-01 Eastman Kodak Company Method of making a material
KR200486802Y1 (en) * 2017-11-22 2018-07-02 이영조 Keratin Removing Sponge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020034791A (en) * 2000-11-03 2002-05-09 김용숙 method of water retaining abrasive sponge using polyvinylacetal sponge
KR101307646B1 (en) 2011-10-04 2013-09-12 박승주 Method of Producing PVA Sponge
KR101687236B1 (en) * 2014-07-09 2016-12-16 (주) 지앤더블류 Method for preparing multipurpose antibacterial sponge and the sponge made therefrom

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2511836B2 (en) * 1991-04-08 1996-07-03 鐘紡株式会社 Method for producing sponge sheet and porous body
JPH1052268A (en) * 1996-05-01 1998-02-24 Kanebo Ltd Carrier for microorganism and its production
JP3306432B2 (en) * 1997-02-21 2002-07-24 アイオン株式会社 Sponge sheet
JP2933580B2 (en) * 1997-07-22 1999-08-16 鐘紡株式会社 Sponge-like spherical particles and method for producing the same
CN102378213B (en) * 2010-08-18 2015-12-16 中兴通讯股份有限公司 A kind of method and system detecting relay node downlink control channel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7211294B2 (en) * 2002-08-09 2007-05-01 Eastman Kodak Company Method of making a material
KR200486802Y1 (en) * 2017-11-22 2018-07-02 이영조 Keratin Removing Sponge

Also Published As

Publication number Publication date
KR100346915B1 (en) 2002-08-03

Similar Documents

Publication Publication Date Title
US5382377A (en) Process for the production of detergents
CN101966409B (en) Macromolecular filter material and preparation method thereof
CN102020816B (en) Polyvinyl formal sponge material with uniform abscesses and rapid imbibition and preparation method thereof
PL331174A1 (en) Preservation by generation of foam
US6140380A (en) Blowing agent and method for producing foamed polymers and related compositions
HUP0003516A2 (en) Sponge materials the said containing sponges and housekeeping articles, and process for producing sponge materials
KR100346915B1 (en) method of polyvinylacetal sponge
CN104830002A (en) Polyvinyl alcohol spongy material and production method thereof
JPH0570579B2 (en)
US5397809A (en) Polyurethane foam of low thermal conductivity and method of preparation
EP1263850B1 (en) Extruded foam product with reduced surface defects
JPH0693124A (en) Pulp foam sheet and method for producing the same
CN111893008B (en) Washing preparation and preparation method thereof
MXPA02005370A (en) Extruded foam product.
CN104693478A (en) Polyvinyl alcohol sponge and preparation method thereof
JP2001172302A (en) Cellulose carbamate sponge and its production method
JP3818741B2 (en) Method for producing polymer porous body
CN114752445A (en) Plant puffed instant washing bubble and preparation method thereof
JP3289403B2 (en) Method for producing expanded pulp beads
JPWO2007069622A1 (en) Molded body or foam molded body containing water-swellable substance, production method thereof, and use method thereof
JPH06107838A (en) Perfume-containing pulp foam
JPH0931232A (en) Cushioning/heat-insulating material prepared by foaming cellulosic substance and its production
JPH0555545B2 (en)
JPH01282223A (en) Molded article of highly water absorbing resin and production thereof
JPH10155696A (en) How to make konjac sponge

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

PN2301 Change of applicant

St.27 status event code: A-3-3-R10-R13-asn-PN2301

St.27 status event code: A-3-3-R10-R11-asn-PN2301

D13-X000 Search requested

St.27 status event code: A-1-2-D10-D13-srh-X000

D14-X000 Search report completed

St.27 status event code: A-1-2-D10-D14-srh-X000

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

PG1601 Publication of registration

St.27 status event code: A-4-4-Q10-Q13-nap-PG1601

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R11-asn-PN2301

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R14-asn-PN2301

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 5

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R11-asn-PN2301

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 6

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 7

FPAY Annual fee payment

Payment date: 20090703

Year of fee payment: 8

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 8

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

St.27 status event code: A-4-4-U10-U13-oth-PC1903

Not in force date: 20100719

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

PC1903 Unpaid annual fee

St.27 status event code: N-4-6-H10-H13-oth-PC1903

Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

Not in force date: 20100719

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

P22-X000 Classification modified

St.27 status event code: A-4-4-P10-P22-nap-X000